65727642 has 16 divisors (see below), whose sum is σ = 131615712. Its totient is φ = 21882480.

The previous prime is 65727589. The next prime is 65727643. The reversal of 65727642 is 24672756.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65727642.

It is not an unprimeable number, because it can be changed into a prime (65727643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (8225982).

Almost surely, 2^65727642 is an apocalyptic number.

65727642 is an abundant number, since it is smaller than the sum of its proper divisors (65888070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65727642 is a wasteful number, since it uses less digits than its factorization.

65727642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13373.

The product of its digits is 141120, while the sum is 39.

The square root of 65727642 is about 8107.2585995514. The cubic root of 65727642 is about 403.5673447170.

The spelling of 65727642 in words is "sixty-five million, seven hundred twenty-seven thousand, six hundred forty-two".